Plumbaginous or graphitic anthracite from the mica

Made:
before 1889

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Plumbaginous or graphitic anthracite from the mica schists of Worcester, 45 miles west of Boston, U.S.A.

Details

Category:
Metallurgy
Object Number:
1889-164/396
type:
specimen
taxonomy:
  • sample
credit:
John Percy Collection